Page 1
GENERAL INFORMATION
Wall Mounting Dimensions
Part No. Enclosure MAT MAB MC
NW2
NH3 29.375 23.50 36.50
ACCESSORIES (for transformers listed in sections 3, 4, 7 and 10)
ENCLOSURE MOUNTING KITS
If wall and/or ceiling mounting is desired for a
transformer, optional mounting kits can be ordered
separately. These mounting kits are NOT available for
all enclosure case styles. Therefore, it is important
that you conrm your enclosure case style, then use
the selection table to the right to determine if A) a
mounting kit is available and B) determine the correct
HPS “Mounting Kit” part number that you must order.
One kit is required for each transformer.
Note: Some of the mounting kits can be used for
both wall and ceiling mount, while others are for wall
mounting only. The table indicates which mounting
methods are available for each kit. The NW2 wall/ceiling mounting kit also includes a drip plate.
The NW2 wall/ceiling mounting kit is only designed for units up to 750 pounds (341 kg) maximum.
Enclosure
Case Style
N1 No No N/A
N2 No No N/A
NH3 Yes Yes NW2
NH4 No No N/A
NH5 Yes Yes NH5DP
NH6 Yes Yes NH6DP
NJ Series No No N/A
Wall
Mount
Available
Ceiling
Mount
Available
HPS
Mounting
Kit P/N
NW2 WALL/CEILING MOUNTING KITS
The following drawings detail the wall and ceiling mounting dimensions required and method by which the
NW2 kits are installed on the NH3 enclosures.
NW2 WALL MOUNT - MOUNTING DIMENSIONS
GENERAL
INFORMATION
MAT
Rear View
MAB
1.75
MC
1.75
BOTTOM
DRIP PLATE
Side View
MOUNTING
BRACKETS
NOTE: Please refer to enclosure dimensional drawings on page 256 for more
detailed dimensional information.
© Hammond Power Solutions Inc.
264
Data subject to change without notice.
Page 2
GENERAL INFORMATION
Ceiling Mounting Dimensions
Part No. Enclosure MA MB
NW2
NH3 26.50 11.75
ACCESSORIES (for transformers listed in sections 3, 4, 7 and 10)
NW2 CEILING MOUNT - MOUNTING DIMENSIONS
MB
Front View
MA
Top View
NOTE: Please refer to enclosure dimensional drawings on
page 256 for more detailed dimensional information.
MOUNTING BRACKETS
BOTTOM DRIP PLATE
HOLES FOR
1/2" ROD(4)
NH5DP & NH6DP WALL/CEILING MOUNTING KITS
The NH5 and NH6 enclosures are designed with
integral wall mounting capabilities. However, when
you wall mount them, you must also install the bottom
drip plate as shown below. The “MB” dimensions listed
in the table below indicate the location for the wall
mounting hardware.
For ceiling mounting of the NH5 and NH6, refer to
the “MA” dimensions listed in the table below and hang
the enclosure using appropriate sized ceiling hanger
rods. However, you must be sure to install the bottom
drip plate to the bottom of the enclosure, then bring the
hanger rod down through both the enclosure bottom
mounting holes and through the drip plate mounting
holes and install mounting hardware.
NOTE: Do not ceiling mount either the NH5 or
NH6 enclosures without installing the bottom drip
plate. All mounting hardware should be rated Grade
8 or higher.
Mounting Enclosure MA MB
Kit P/N Style Dimension Dimension
NH5DP NH5 9.00 7.00
NH6DP NH6 9.00 8.00
NOTE: Please refer to enclosure dimensional drawings on page
256 for more detailed dimensional information.
Bottom Drip Plate
(NH5DP or NH6DP)
MA
MB
GENERAL
INFORMATION
© Hammond Power Solutions Inc.
265
Data subject to change without notice.
Page 3
GENERAL INFORMATION
ACCESSORIES (for transformers listed in sections 3, 4, 7 and 10)
ANTI-VIBRATION PAD AND VIBRATION ISOLATOR KITS
All standard transformers come with installed internal vibration absorbing pads to minimize noise during operation.
Optional external “anti-vibration” pad and “vibration isolator” (for higher noise dampening) kits can be used to
reduce operating noise even further. All are resistant to industrial contaminants like oils, acids and alkalies.
ANTI-VIBRATION PAD KITS
Part No. Case Style
P1 NH Series
P2 NJ Series
All Anti-Vibration Pad kits and Vibration Isolator kits contain
a set of four (4) pads or isolators. Therefore only one kit is
required per transformer.
Description
Set of four (4) rubber
anti-vibration pads which
replace the standard
steel enclosure washers.
VIBRATION ISOLATOR KITS
Part
No.
NMP1 Up to 340 lbs Set of four (4) molded
NMP2 341 to 680 lbs
NMP3 681 to 1040 lbs
NMP4 1041 to 1740 lbs
NMP5 1741 to 2330 lbs
NMP6 2331 to 3450 lbs
NMP7 3451 to 4690 lbs
ACCESSORIES (for transformers listed in sections 8 and 9)
NQTW1 and NQTW2 Wall Mounting Kits
Transformer
Weight (Lb)
Description
neoprene and steel
plate assemblies
that virtually
eliminate vibration
noise between the
transformer and the
mounting surface.
GENERAL
The NQTW1 and NQTW2 wall mounting kits are specically
designed for HPS commercial or industrial encapsulated (potted)
distribution transformer units up to a maximum of 45kVA or 800 pounds
(363 kg). These mounting kits are designed for encapsulated (potted)
units only, no drip plate is included/required. Please contact HPS
customer service if you have any questions.
Note: Always measure and secure mounting brackets to the wall
surface rst, then lift the transformer (using appropriate lifting equipment)
onto the brackets and attach using minimum Grade 8 hardware.
INFORMATION
Enclosure
Case Style
NQ0-NQ8 Wall Included
NQS10 Wall or Floor NQTW2
NQT3-NQT6 Wall Included
NQT7-NQT8 Wall or Floor NQTW1
NQT9A Floor N/A
NQT9* Wall or Floor NQTW2
*Applies to HPS Fortress line only.
Mounting
Type
Wall Mounting
Kit Part Number
266
© Hammond Power Solutions Inc.
Encapsulated
(potted) unit
Mounting
Brackets
Data subject to change without notice.
Page 4
GENERAL INFORMATION
ACCESSORIES (for transformers listed in sections 8 and 9)
NQT ENCLOSURE SERIES NEMA 4/12 GASKET KITS
The following options and accessories offered are available on all standard and custom three phase HPS
Titan® industrial encapsulated distribution transformers for harsh environments and hazardous locations (see
section 8), HPS Fortress™ commercial encapsulated distribution transformers (see section 8) and encapsulated
autotransformers (see section 9).
Optional NEMA 4/12 Gasket Kits
Standard NEMA 3R rated NQT enclosures can easily be converted to a NEMA 4 or 12 rating by ordering and
installing the appropriate gasket kit as listed in the table below.
Enclosure Style Gasket Kit P/N
NQT2 NQT2GK
NQT3 NQT3GK
NQT4 NQT4GK
NQT5 NQT5GK
NQT6 NQT6GK
NQT7 NQT7GK
NQT Wiring Compartment
Cover Mounting Hardware
NQT Wiring Compartment Cover
NQT Wiring Compartment Cover
Nema 4/12 Gasket
Encapsulated Transformer
in NQT Enclosure
Enclosure Style Gasket Kit P/N
NQT8 NQT8GK
NQT9 NQT9GK
NQT9A NQT9AGK
NQT10 NQT10GK
NQT11 NQT11GK
Side
Knockout
NQT Enclosure
Mounting Holes
Nema 4/12 Gasket shown installed
on inside of NQT enclosure wiring
compartment cover. Ensure gasket
holes are aligned with cover holes.
Optional Stainless Steel Enclosures
Optional NEMA 4 and 12 rated stainless steel enclosures for encapsulated transformers are identical to the
standard steel enclosure designs but are designed using either type 304 or 316 stainless steel in accordance with
ANSI, NEMA, UL and ABS requirements for indoor, outdoor and marine duty applications.
267
© Hammond Power Solutions Inc.
Data subject to change without notice.
GENERAL
INFORMATION
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